“At the peak of his influence, from the 1960s through the 1980s, Graham was the top man at Chicago’s biggest architectural firm, Skidmore, Owings & Merrill…. [H]e shaped a legacy that suggests the epitaph on the tomb of Sir Christopher Wren, who is buried in his masterpiece, St. Paul’s Cathedral in London: ‘Reader, if you seek his monument, look around you.’ “